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The Network Layer Quiz

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Questions and Answers

What is the primary responsibility of the network layer?

Adding physical addresses to the packet header

Overseeing delivery of packets between two systems on the same network

Handling error correction for packet transmission

Ensuring source-to-destination delivery of packets across multiple networks (correct)

What information does the network layer add to the packet header?

Error correction codes

Physical addresses of the sender and receiver

Logical addresses of the sender and receiver (correct)

Network interface information

In an internetwork, how are packets routed to their final destination?

Packets are broadcasted to all connected networks

The network layer of the destination host retrieves the packets

Routers or switches route packets to their final destination (correct)

Packets follow a random path to reach the destination

What distinguishes the network layer from the data link layer in terms of packet delivery?

<p>Network layer ensures delivery across multiple networks, while data link layer handles delivery within the same network</p> Signup and view all the answers

Why is an addressing system necessary for packet travel through the Internet?

<p>To help distinguish the source and destination of packets</p> Signup and view all the answers

Study Notes

Network Layer Responsibilities

Primary responsibility is to route data between devices on different networks

Packet Header Information

Network layer adds source and destination IP addresses to the packet header
Also adds information for routing and congestion control

Packet Routing

Packets are routed to their final destination through a process called routing
Routers examine the destination IP address and forward packets accordingly
Routing involves multiple hops, with each router forwarding the packet to the next hop

Network Layer vs Data Link Layer

Network layer focuses on routing packets between networks
Data link layer focuses on error-free transfer of data frames between devices on the same network

Addressing System Necessity

An addressing system is necessary for packet travel through the Internet
IP addresses allow devices to be uniquely identified and located on the network

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Description

Test your knowledge of the network layer with this quiz. Explore topics such as packet delivery across multiple networks, the role of the network layer, and its functions in ensuring seamless communication between systems. Ideal for students and professionals in computer science and networking.